Wrench.



q/Vi H1 000% PATENTED JUNE 30, 1908.

W. G. BARNES.

WRENCH.

APPLICATION FILED JAN. 31. 190B.

$5. Ear/165K THE NORRIS Pzrins C0,, WASHINGTON, n. c.

WILLIAM CLINTON BARNES, OF LATROBE, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed January 31, 1908. Serial No. 413,556.

To all whom it may concern:

Be it known that I, WILLIAM CLINTON BARNES, a citizen of the UnitedStates of America, residing at Latrobe, in the county of W'estmorelandand State of Pennsylvania, have invented certain new and usefulImprovements in Wrenches, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to wrenches, and the objects of the inventionare, first, to provide a simple and inexpensive wrench; second, a wrenchthat can be easily and quickly adjusted; and third, to provide a wrenchwherein the movable jaw can be quickly adjusted and then minutelyadjusted to firmly engage a nut or similar object.

I attain the above objects by a wrench of a novel construction that willbe presently described and specifically pointed out in the appendedclaims.

In the drawings: Figure l is an elevation of a wrench constructed inaccordance with my invention, Fig. 2 is a similar view illustrating themovable jaw thereof in section, and Fig. 3 is a horizontal sectionalview of a wrench taken on the line of Fig. 2.

In the accompanying drawings, 1 designates a shank having a fixed jaw 2and a detachable handle 3. The front edge of the shank 1 is providedwith teeth l, while the rear edge thereof is smooth.

Slidably mounted upon the shank 1 is a movable gripping j aw 5 having anouterstrap 6 embracing the shank 1, and at its inner end, is providedwith arms 7 extending past the rear edge of said shank and of a lengthto project beyond the strap 6. Between these arms 7 is pivotally mounteda lever 8 having a pawl end engaging the shank and a projecting handleend 9. The lever 8 is normally held in engagement with the rear smoothedge of the shank 1 by a spring 10 secured to the strap 6 of the jaw 5.The front side of the jaw 5 is cut away, as at 11 to accommodate anexteriorly threaded nut 12, retained in the jaw 5 by a pin 13. The nut12 is adapted to engage the teeth 4 of the shank 1 and prevent the jaw 5from being adjusted upon said shank, except by rotating the nut 12.

Vhen it is desired to quickly adjust the jaw 5, the handle 9 of the pawlS is pressed towards the shank 1, and as the pawl is normally heldagainst the shank 1 by a spring 10, the jaw 5 will be tilted, carryingthe nut 12 out of engagement with the teeth 4 ol' the shank 1, thusallowing the jaw 5 to be quickly moved upon the shank of the wrench.

It will be observed that the upper strap 6 is cut away sufficiently toallow a tilting movement of the jaw while being adjustcd.

Having now described my invention what I claim as new, is

In a wrench, a toothed shank provided at its outer end with a fixed jaw,a movable jaw slidably-mounted on said shank and having a tiltingmovement on the shank, a strap formed integral with the jaw and having aconvex inner face engaging the shank and permitting the tilting movementof the movable jaw on the shank, a screw carried by the movable jawengaging the teeth of said shank, a pair of arms carried by said jawextending beyond the rear edge of the shank, a lever pivoted in saidarms having a p awl-end engaging the rear edge of the shank and aprojecting handle end, and a spring having one end fixed in the strap 01said jaw and its free end bearing upon the pawl-end of said lever forholding the said screw in engagement with the teeth of said shank,

In testimony whereof I aHix my signature in the presence of twowitnesses.

WILLIAM CLINTON BARNES.

WVitnesses 1 JAS. T. Hue-nus, S. C. BLAIR.

